Main body of a vacuum cleaner



FIG. 1 is a left front perspective view of a main body of a vacuum cleaner showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a top plan view thereof. 

The ornamental design for a main body of a main body of a vacuum cleaner, as shown and described. 